We recently installed a Windows 2012 Server. We have 5 Windows 7 Pro workstations. On two of the 5 workstations, we randomly lose connectivity to mapped drives on the server. If working in an application, we will frequently not be able to do a save to the server. We have to close the app and reconnect to the share, sometimes just by double-clicking on the drive letter.
it is a Dell PowerEdge server with Broadcom NIC. Three of the workstations never lose connectivity. Cabling has been tested. Putting a different server on the same connection does not create a problem. We have updated the driver on the NIC, replaced NICs on the affected workstations.
Short of reinstalling the OS, is there anything else we can try? it's a very small network and we are temporarily using a Windows 7 Pro workstation as a temporary server. No connectivity issues with this.